William ambler



2 Sheets-Sheet 1.

(No Model.)

W. AMBLBR.

APPARATUS FOR CASTING.

120.462,422. Patented N0v.3,1891;

amew f l 2 Sheets-Sheet 2.

(No Model.)

W. AMBLER. APPARATUS POR CASTING.

No. 462,422. Patented Nov. 3, 1891.

NITED STATES PATENT OFFICE.

WILLIAM AMBLEE, oF BRADFORD, ENGLAND APPARATUS Fon CASTING.

SPECIFICATION forming part of Letters Patent No. 462,422, dated November 3, 1891.

Application tiled .Tune l2, 1890.

T0 all whom it may concern,.-

Be it known that I, WILLIAM AMBLEE. engineer, a subject of the Queen of Great Britain and Ireland, residing at Bradford, Yorkshire, England, have invented certain Improved Apparatus for Casting, of which the following is a specification.

This invention relates to an improved Inachine for casting from molten Inetal tubular articles either open throughout their length or closed at one end, as Inay be desired.

In the accompanying drawings, Figure 1 represents the improved Inachine in front elevation. Fig. 2 represents a side elevation thereof. Fig. 3 represents a plan View thereof, and Fig. 4represents a sectional elevation thereof through the plane indicated by the line a t, Fig.

6 represents an open-ended mold, which is made of the-required internal formation and dimensions and is bolted, as at 7, to a table 8. The table S is bolted at9, (ride Fig. 4,) to a flanged tubular carrier l0, which is supported by a flanged bracket 11, bolted at 12 to a vertical turn-table 13, the parts of the bracket 11 being bolted together at 14. The mold is also supported and guided in its turning movement-s, hereinafter further referred to, by an upper surrounding bracket 15, which is also bolted to the turn-table at 1G and carries a series of steadyingfrunners 1S, mounted and secured on center-pins 19. The table S isro tated so as to impart rotary motion to the mold G by frictional contact with a disk 20, which is keyed, as at 2l, to a shaft 22, so as to be rotated thereby, but to have a limited freedom of movement in the direction of the axis of the shaft 22, so as to permit of its being borne against the edge of the table S by a spring 23, which has its bearing in a recess 24 in the hub 25 0f the turn-table. On the other end of the shaft 22 there iskeyed, as at 2G, a disk 27, which is driven by frictioual contact with a disk 2S on a first-motion shaft 29. The disk 27 (like the disk 20) has a limited freedom of movement in the direction of the axis of the shaft 22, so as to permit of its being borne against the edge of the disk 2S by a spring 30, which has its bearing against an adjacent standard 3l. The disk 28 is keyed, as at 32, on the shaft 29, with facility of to-andfro adjustment thereon to the eX-v Sen'al No. 355,200. (No model.)

tent of the radius of the disk 2T for the purpose of regulating, as desired, the speed at which the shaft 22 and consequentlythe table S and mold G are driven from the constant speed of the shaft 29. The adjustment of the disk 2S is eected by means of a clutch fast to the disk 2S, operated by a fork 34, rising from a wormed nut 35, actuated by a wormed shaft. 36, which is turned as required by a hand-wheel 37. 'lhe shafts 29 and 36 are supported by opposite side standards 3S rising from the foundation-plate 39, and the shaft 29 is fitted with fast and loose pulleys 49 4l and maybe driven at any suitable speed. Itis also fitted with a fast pulley42, hereinafter further referred to. The shaft 22 (rade Fig. 4) works within a sleeve or tubular shaft 43, which is supported by opposite standards 31, rising from the foundation-plate, anden the front end of such latter shaft 43 the hub 25 of the turn-table 13 is keyed, as at 44. There is also keyed, as at 45, on such tubular shaft 43 a worm-wheel 4G, which engages with a worm 47, keyed, as at 4S, on a shaft 49, .which latter is supported in opposite side standards 50, rising from the foundatiolr plate. The shaft 49 is iitted with fast and loose pulleys 5l 52, by means of the former, of which and a strap 53, driven bythe pulley 42 on the shaft 29, it can be rotated, as may be desired, for the purpose of turning the turn-table 13, together with the rotating mold 6, and all other attachments it carries, about the axis of the shaft 22 and 43, as hereinafter further referred to. The shaft 49 is also titted with a hand-wheel 54, by means of which the turn-table can be operated or returned to its vertical position by hand, if desired. The tubular hub 10, to which the table Sis bolted as aforesaid, is (ride Fig. 4) bolted at 55 to a toothed wheel 56, which actuates one 57 of a pair of connected change-wheels 57 5S, which are supported by a stud 59, carried by a bracket (i0, which is bolted at G1 to the turntable. The other change-wheel 5S of the pair 57 5S actuates a chaugewheel 62, which is situated between the wheel 56 and a projecting part 63 of the bracket (59, and is formed with a tubular hub surrounding a rod G4, which rises through the said tubular hub 19 andthe table S into the interior of 4the mold 6. The wheel G2 is formed with a featheror key which IOO engages with a longitudinal keyway 65, formed in the rod 64, (vde Fig. 4,) and so rotates it. Within the mold the squared top end of the rod 64- is fitted withY a removable false bottom 66, So as to be rotated thereby. Such false bottom may either be of a conical formation (vde Fig. 4) or of a fiat cheeseshaped or analogous formation, (eide Figs. l and 2,) in which latter event it may be made in one piece or in concentric rings. The lower projecting end of the rod (i4 is formed with surrounding circular corrugations 68, which engage with a correspondiugly-toothed wheel 69, keyed on an axle 7l, which is supported by the bracket G0, and is provided with a spoke or hand wheel 72, by which it can be rotated, so as to cause the rod 64, (whether rotating or not,) together with the false bottom it carries, to be raised or lowered within the mold, either while the mold is stationary or-when it is rotating, as may be required.. The toothed wheel may be adapted with a pawl or pawls 73, which may be caused to gear therewith or be placed out of gear therewith, as required.

74C` represents a removable ring of any required width or thickness, which is applied to the open end of the mold and secured by bolts '75.

In the aforesaid improved arrangement of apparatus I provide in combination means, respectively, for rotating the mold at any desirable constant or differential speed, for rotating the false bottom at any desirable relative speed, for raising and lowering the false bottom within the mold, as may be required,

for causing the mold-and its attachments to assume different positions during the manufacture-of the article, as may be required, and

tubular articles.

In manufacturing tubular articles in the above-described improved apparatus at the beginning of the operation the mold occupies the vertical position indicated on theaccompanying drawings and the false bottom occulpies the raisedv position indicated in Figs. 1, 2, and et. As a sufficient quantity of molten metal is poured into the-mold the latter is rotatedy at such a speed as to cause the metal to fly outwardl to and up the inner circumference of the mold to a thickness determinedby the ring 74. As this thickness is reached.v

the tube in process of formation is elongated:

relnains in such horizontal position its speed of rotation is increased by shifting the disk 28 toward the center of the disk 27, and by such means, acting conjunctively with the aforesaid'lowering false bottom, any tendency of the metal to gravitate more to one end of the mold than to the other and to produce 1nteriorly-tapered tubes is avoided and the formation of the tubes with interior parallel sides is insured. As the metal sets, the speed of rotation of the mold is gradually lowered by'shifting the disk 28 toward the periphery of the disk 27, and when the molded article is ready for removal the turn-table is again rotated a further quarter-circle by again operating the shaft 49, as aforesaid,.w hich causes the' mold to be inverted when the molded article falls out, or may be gradually lowered. If au open-bottomed tubular article is being formed, then the conically-formed false bottom may be used and rotate at the same speed as the mold, in which event the mol-ten metalv will wholly fall from off the conical false bot- 1 tom toward the inner surface of the mold and will be wholly spread in even thickness there- `lover by the rotating thereof; or the cheeseshaped false bottom may be used and be ro- 4tated at a greater speed than t-he moldsoas, ,to cause the molten metal resting thereon to tbe spun by the increased centrifugal force against the inner surface of the mold, by thel rotation of which it will be spread inA even thickness about its inner surface, as aforesaid but if a closed-bottomed tubular i-ngot or article is being formed the cheese-shaped false bottom is used and rotated at a some- ,What slower speed than the mold,so as to effect a retarding influenceon the lowest portion of the molten metal and prevent such metal being wholly taken up by and spread over the inner surface of the mold. for forming open-bottomed or closed-bottomed I claim' as my inventiony 5 cylindrical and tubular articles. from molten l metal, in combination, a mold having. a false bottom, means for rotating the mold at any ldesired speed, means for rotating thevfalse bottom. at any desired relative; speed, means for raising and. lowering they falsey bottom within the mold, as req uired, and means for i carrying the mold and causing it and its attach ments to. assume different axial positions l during the manufacture of the article, as rei quired, and thereby forming tubular articles,

as set forth.

2. In apparatusto be employed: in thefcastv"ing of cylindrical and tubular articles from molten metal, in combinatioma mold-a mov- 'able bottom therefor, a table supporti-ngL the E molda friction-wheel gearing with said' table and a spring to-keepfthemin contact, a shaft for the friction-wheelvand carrying also one of a pair of differential friction-gears, a spring ing of tubular and cylindrical articles frommolten metal, in combination, a mold, a movable bottom therefor, differential frictional IOO IIO

gearing to rotate the mold, change-wheels for differentially rotating the said bottom relatively to the mold, and means for actuating the same by power.

4. In apparatus to be employed in the casting of cylindrical and tubular articles from molten metal, in combination, a mold, differential frictional gearing for rotating the mold, a rising and falling false bottom for the mold, change-wheel gearing for diierentally rotating the said bottom relatively to the mold, a depending rod connected to the false bottom, and means for raising and lowering the same within the mold, and means for actuating the same by power.

5. In apparatus to be employed in the casting of tubular and cylindrical articles from molten metal, in combination, a mold, differential frictional gearing for rotating the mold,

XVM. AM BLER.

. Witnesses:

HENRY S. LENTY, GEO. F. Moss, Clerks to T. P. and Greenwood Teale, Sol/rs.

and Notaries Publ/ic, Leeds, England. 

